James gumming



(No Model.)

J. CUMMING..

TUYERE.

No. 888,528. Patented July 24, 1888.

Jvfart .A ffl" UNiTnn STATES PATENT Ormea.

JAMES OUMMING, OF BUFFALO, NEV YORK.

TUYERE.

SPECIFICATION forming part of Letters Patent No. 386,528, dated July 24,1888.

Application filed January 2li, 1888. Serial No. 261,720. (No model.)

To all whom, it may concern:

Be it known that I, JAMES CUMMING, of Buffalo, in the county of Erie andState of New York, have invented certain new and useful Improvements onBlaeksmithsTuyeres; and I do hereby declare that the followingdescription of my said invention, taken in connection with theaccompanying sheet of drawings, forms a full, clear, and exactspecification, which will enable others skilled in the art to which itappertains to make and use the same.

My present invention has general reference to blaeksmiths tuyeres; andit consists, essentially, in the novel and peculiar combination 0i'parts and details of construction, as hereinafter iirst fully set forthand described, and then pointed out in the claim.

In the drawings, Figure l is a plan of my improved tuyere. Fig. 2 is asimilar view showing myimproved blast-extensions in po sition. Fig. 3 isa transverse sectional elevation in line x rr of Fig. l. Fig. 4 is asimilar view in line y g/ of Fig. 2. Figs. 5, 6, and 7 are plans showingvarious modifications of my improved tuyere and blast extensions.

Like parts are designated by corresponding letters of reference in allthe figures.

The object of my present invention is the production of a very simple,convenient, efieient, and durable tuyere-iron for blacksmiths7 fires. Toobtain this result, I construct my tuyere-iron proper of au annularcase, A, having on one side a branch or nozzle, B, through which anair-blast enters the interior or air chamber, O, of said case A. ln theinterior of this chamber is a tube, D, formed, preferably, in one piecewith the bottom E, said tube extending upward to within a short distanceof the top F of the case A, so as to produce an annular passage, G,Figs. 3 and 4, through which the air-blast entering the chamber Cescapes into the blast-opening H, formed in the top F ofthe case A, asshown in Figs. l and 3, and thence into a blacksmiths fire when builtupon the tuyere.

On the bottom of the caseA are formed two grooves, in which a slideoperates so as to close the passage d in the tube D on the bottom, ahandle, J, being provided for to operate the said slide I in a mannerreadily comprehended, and a stop, t', Figs. l, 3, and 4, being formed onthe bottom E to limit the movement of said slide.

Opposite the nozzle B, or in any other convenient place in the chamberO, I form an exit-opening, c, closed by a suitable plug, b, for thepurpose hereinafter to be referred to.

The tuyere-iron thus far described, except the slide I and plug b, isformed entire-z'. e., in one piece of casting-in gray or malleable ironor steel, thus combining strength with cheapness, it being a matter offact that this tuyere can be produced for less money than any othertuyereiron with which I am acquainted. It is capable of being usedsuccessfully iu any blacksmiths forge, and will produce a very strongfire, while by pulling the slide I an opening is made through which thecinders accumulating on the top of the tuyere can be readily dischargeddown into the usual pit of the forge. By withdrawing the plug b anescape-opening is afforded, through which ashes, dust, the.,accumulating in the airchamber O can be discharged.

In many cases it is desirable to build peculiarly-shaped lires to adaptthem to particular forgings on hand. Ilo provide for such cases, Iprovide my tuyere with a number of de tached conduits--such as shown inFigs. 2, 4, 5, 6, and 7-consisting of tubes L, having an angulartransverse section, and on their bottom side an annular rim, N, fittingthe opening H in the top of the tuyere, and provided in their topsurface with a series ol" slots or escape-openings, O, as clearly shownin the drawings. These conduits have different forms, being eitherangular, as shown in Figs. 5 and 6; straight, as shown in Fig. 2,circular, as indicated by the shading ofthe same in Fig. 4, or curved,as illustrated in Fig. 7, adapted to the different requirements of a jobon hand. These conduits can be instantly inserted into the tuyere and apeculiarlyshaped lire started that will answer the purpose desired.

Having thus fully described my invention, I claim as new and desire tosecure to me by Letters Patent of the United States- The annular casingA, having the nozzle B and the upright tube D cast therewith, and havingalso a central opening, H, above said tube, in combination With anauxiliary conduit having a central opening, and a down- In testimonythat I claim the foregoing as my invention I have hereto set my hand inthe presence of two subscribing Witnesses.

5 Wardly-extending iange, N, surrounding said JAMES CUMMING.A

opening and fitting into the said opening H, this auxiliary conduitbeing shaped to con- Attest: form to the Work required and provided withMINNIE HEIM, discharge-openings o in its top, substantially XVM. AsPDIN.

1o as set forth.

